The link did not come through correctly in the HES post, the: "conomics_and_CPE.html" was cut off from the end of: "http://cas.umkc.edu/econ/economics/faculty/Forstater/320/Environmental_ E" Mathew Forstater I figured interested folks would realize that the address had wrapped and would cut and paste the address. Another solution is to use tinyurl.com, like this http://tinyurl.com/ygzv8u Humberto Barreto